Wrapping his hand around Huaisang has him forgetting to breathe for a moment, the weight and feel of the other teenager's shaft distracting him before his hand starts to move.

Slowly at first, a little tentative but he does try to follow the instructions, even if his hand stills when Huaisang strokes him, Jiang Cheng's head dropping back as he moans a little more loudlly.

His hips buck up into that hand as he remembers to start stroking again, his thumb sliding over the head like he'd felt Huaisang do.